After practice, one of the players usually in the middle of the madness explained why he believes it's all a healthy thing at this point of training camp.

"I think it’s good, man. It provides a spark," right guard T.J. Lang said. "A big thing this year our whole team’s been focusing on has been finishing. Offensive line, it’s finishing blocks. Defensive line, it’s getting off blocks and pursuing the ball carrier. Making sure you’re around the pile. That’s when a lot of the extra-curriculars happen.

"Sometimes, the tensions just flare. You definitely want to push that envelope as far as, we’re blocking guys. We’re not going to let up until we hear the whistle blown. And those defensive guys, they’re going to hit somebody if they get the chance.”

The fireworks really flared when linebackers coach Winston Moss and offensive line coach James Campen screamed at each other, centimeters apart.

This half-line drill is full of energy by design. The Packers want guys to finish plays. So it wouldn't be a shock if Moss and Campen were being theatrical on purpose.

Lang, who was right there, said their spat was genuine.

"They were fired up," Lang said.

"The offense did a lot of good things that day and I think the defense took a lot of those things personal. They made a point to come out and show that they weren’t going to back down. Both of those guys, Coach Moss and Coach Campen, they’re both very passionate about their jobs. I know just from being with Campy for however many hours per day in the meeting room and the practice and the jog-throughs, he’s a guy who’s always shown he’s very passionate about what he does. He loves the game of football. It gets to a point where the coaches probably get frustrated, too.

"They wish they were out there with us in the spirit they are. It’s good to see them get fired up and after each other.”

And late in practice, Lang and veteran Jarrett Bush got into it themselves after a play. Known as the resident parasite at practice, Bush came after Lang following a short-yardage play.

"He’s just a squirmy little battler," Lang said. "He’s a guy who’s not going to let you beat him. He’s got that kind of attitude. …He’s a don’t-back-down type guy.”

All in all, Lang is surprised it took this long for tempers to flare.

If this wasn't happening, then he believes there'd be a problem.

"I don’t think we had our first official fight until last week," Lang said. "I think that’s the longest we’ve went without one. If emotions aren’t flaring and guys aren’t shoving guys, just getting sick of it, you like to see that passion. It’s nothing personal. We’ve got 90 guys in here doing the same thing every day. Everybody’s trying to earn a job. It’s just something that comes down to showing passion. As long as you’re keeping it on the field and not dragging it on in the locker room or for a couple extra days, that’s something everybody likes to see.”

About Tyler Dunne

Tyler Dunne covers the Green Bay Packers. He has been on the beat since 2011, winning awards with the Pro Football Writers of America and Milwaukee Press Club.